bouyantBoussinesqSimpleFoam continuity error
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Regards |
I just solved the problem. I hadn't worked with potentialFoam.
I know it was a stupid question. But for those who are beginner in openFOAM like me: 1) make a copy of your current case 2) use potentialFoam to run the case. in this step you initialize your values. 3) copy 0/U file into your own case. 4) start solving. best ~ |
hi everybody,
I have the same problem. first, I ran potentialFoam and it says that no continuity error exists. then I changed the solver to buoyantBoussinesqSimpleFoam and ran it. but the following error appeared agian: Code:
[1] --> FOAM FATAL ERROR: my U bcs: Code:
dimensions [0 1 -1 0 0 0 0]; my p bcs: Code:
dimensions [0 2 -2 0 0 0 0]; thanks a lot Mostafa |
hi again,
it seems my problem was solved!!!! I changed my zeroGradient velocity BC to fixedValue and waited to openFoam solved it in some iterations, then I changed it to zeroGradient again. there is no continuity error :D I think the reason is when a model is solved by BCs different from the original BCs, actually the results are used as the initialize values for the next run. do I right????:confused: |
NO, It didn't work. this way fixed my BC as fixedValue.
when I ran the potentialFoam the following results appeared: Code:
Create time please help me |
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You do not have any velocity inlet or pressure inlet in order to make your case work. after defining a velocity inlet, I prefer to use zeroGradient BC for walls and inflow, and a fixed Value 0 BC for outflow in pressure dictionary. |
thank you, Mojtaba
I have solved this case before, with this difference that the recent geometry is longer than later geometry. I increased grid number but the error was appeared, but when I decrease it, it worked. already I'm running it. I hope it return correct results. but I don't understand why this error appears????? thanks again. Mostafa |
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You mean by decreasing number of grids you are able to run the case, but increasing it, causes the error? |
yes, I think when I increase the grids the cumulative continuity error increases, while the grids are decreased this error decrease also.
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Hi, I am wondering if we can use potentialFoam to initialize multiphase problems. Looking forward to hearing from you. Thanks. |
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